Back to Journal

International Journal of Animal Science

Enhancing the Reproductive Performance of Male Rabbits by Supplementing their Diet with Tangerine Peel Extract During the Summer Months

[ ISSN : 2575-7806 ]

Abstract Citation Introduction Materials and Methods Results and Discussion Conclusion Reference
Details

Received: 15-Apr-2024

Accepted: 23-Apr-2024

Published: 29-Apr-2024

Mohamed Basyony Mohamed Mahmoud

Poultry Nutrition Research Department, Animal Production Research Institute, Egypt

Corresponding Author:

Mohamed Basyony Mohamed Mahmoud, Poultry Nutrition Research Department, Animal Production Research Institute, 12618, Giza, Egyp

Keywords

Orange oil, Lemon Oil, semen evaluation, rabbit bucks, motile sperm

Abstract

Various natural feed extracts were tested to preserve semen quality in male rabbits under heat stress conditions. This study investigated the impact of orally administering tangerinein waste extract (TWE) on the semen quality of male rabbits. Twenty-four male California rabbits, aged 7-8 months and weighing an average of 3579.40±61.39 kg, were divided into four experimental groups with six rabbits in each group. The control group was administered 3.0 mL of distilled water, the second group received 2.0 mL/kg of body weight of TWE, the third group received 4.0 mL/kg of body weight of TWE, and the fourth group received 6.0 mL/kg of body weight of TWE. The rabbits were given the extract orally once daily for 8 weeks under summer conditions (32.50°C and 76% relative humidity). The administration of TWE significantly enhanced semen quality compared to the control group. In conclusion, oral TWE supplementation improved semen quality characteristics in the presence of heat stress during summer conditions.

Citation

Mohamed Mahmoud MB. (2024) Enhancing the Reproductive Performance of Male Rabbits by Supplementing their Diet with Tangerine Peel Extract During the Summer Months. Int J Anim Sci 5: 3.

Introduction

The citrus species are a valuable source of versatile oil that can be used for both edible and industrial purposes (Maria et al., 2012). The main components found in citrus oil include D-Limonene, Pulegone, and LCarvone for orange peel essential oil, D-limonene, 2-cyclohexen-1-ol, and β-Pinene for lemon peel essential oil, and β-Pinene, D-limonene, and α-Pinene for lime essential oil (Njoku and Evbuomwan, 2014). These components have been shown to improve animal reproduction during periods of heat stress.

The fertility of mammals relies on the quality of semen (Dalton, 2011), which can be affected by unfavorable environmental conditions (Rasooli et al., 2010). Heat stress is a significant environmental factor that can have negative effects on the reproductive functions of male rabbits, leading to increased levels of free radicals and disruption of the antioxidant-defense system (Marai et al., 2008; Ahmad et al., 2012). To maintain the semen quality of rabbit bucks during heat stress, various natural feed additives, such as vegetable oils like olive oil, rice bran oil, corn germ oil, and wheat germ oil, have been used as a source of plant antioxidants (Eleroglu and Ori-Jesu, 2008; Hashem et al., 2013).

Materials and Methods

The experimental research was conducted at the Rabbit Research Laboratory located at The El-Nobaria research station, Institute of Animal Production, Dokki, Egypt. The study took place during the Egyptian summer from July 21 to September 1, 2023. Throughout the experimental period, the daily average temperature was 32.50 degrees Celsius, and the average relative humidity was 76%. Based on data from a nearby Meteorological Station, the experimental rabbits experienced heat stress. The study examined how tangerine waste extract affects the semen evaluation of California rabbit bucks. Twenty-four adult, fertile NZW rabbit bucks aged 7-8 months, with an average initial body weight of 3579.40±61.39 kg, were randomly divided into 4 experimental groups (n = 6) as follows:

The first group served as the negative control and was given 3.0 mL of distilled water orally twice daily (T1). The second group received tangerine waste extract at a dosage of 2.0 mL per kg of body weight (T2). The third group received tangerine waste extract at a dosage of 4.0 mL per kg of body weight (T3). The fourth group received 6.0 mL of tangerine waste extract per kilogram of body weight (T4). These doses were divided into two daily doses, one in the morning and one in the afternoon. Two local oil genotypes were sourced from El Naser Factory for natural oil extract in Borg El Arab, Alexandria, Egypt. The oils were administered to rabbits twice daily via gavage. The experimental period lasted for 10 weeks, with 2 weeks for adaptation and the remaining 8 weeks for semen evaluation and data collection. The basal diet was prepared and pelleted to meet the nutritional needs of rabbits, as outlined in NRC (1977). The diets were provided to the rabbits freely. Fresh water was available to the rabbits at all times. All male rabbits were kept in the same management and environmental conditions. Each buck was housed individually in galvanized wire cage batteries (50×50×40 cm) equipped with feeders and automatic drinkers in a Rabbitry that was naturally ventilated and lit. Semen collection and evaluation: Semen samples were collected weekly (weeks 3-10) during the experimental trial using an artificial vagina. Four mature females were exposed as teasers, and semen collection was carried out following the method described by Boiti et al (2005). The ejaculate volume was measured using a graduated collection tube attached to the artificial vagina after removing the gel mass. The pH value was determined using pH paper from Merck KgaA, 64271 Darmstadt, Germany. The forward motility percentage of sperm was assessed immediately after semen collection by visually examining several microscopic fields in individual samples under 100x magnification using a light microscope with a heated stage. The motility was subjectively assessed on a scale of 0-100%. Sperm concentration was determined after diluting the semen 1:100 and using the improved Neubauer hemocytometer slide. Semen mass motility was scored on a scale of 0-3 following the method described by Moule (1965). A dried smear of a drop of semen stained with an eosin nigrosin blue staining mixture was prepared to assess sperm viability and abnormality by counting 200 sperm cells. The sperm cells were classified as complete or partial purple-stained (dead) and non-stained (live). Packed sperm volume was measured using Micro-AID® microhematocrit tubes and centrifuged for 5 min at 4000 rpm. Sperm progressive motility, viability, and morphology were determined by a trained technician following Salisbury and Van Demark (1961). Total Sperm Output (TSO), Total Motile Sperm (TMS), and Total Functional Sperm Fraction (TFSF) were calculated based on these measurements. Statistical analysis: The data were analyzed using SPSS 11.0 statistical software (2007) through one-way repeated measures Analysis of Variance (ANOVA). The statistical model included the fixed effect of treatments, as well as the random effect of an individual buck. Differences among means were assessed using the Duncan (1955) test, with statistical significance set at p<0.05.

Results and Discussion

Table 1 indicated that the average ejaculate volume of rabbit bucks showed a numerical increase when orally administered tangerine waste extract compared to the control group (T1). The pH of semen showed a significant effect (P=0.05) due to different doses of TWE treatments compared to the control group (T1). There was a significant increase in individual motility and sperm concentration (SC) of rabbit bucks in the treated groups compared to the control group (P=0.03 and 0.02). Alvariño (2000) found that exposure to summer heat stress led to a significant decrease in ejaculate volume and sperm motility in males. High THI exposure in sexually fertile Rex rabbits negatively affected sexual desire, sperm density, testicular cytoarchitecture, and apoptosis in seminiferous tubules (Pei et al., 2012). Improper environmental conditions can reduce the quality and fertility of sperm cells, with heat stress negatively impacting testicular function (Chen et al., 2015).

Table 1: Effect of citrus pulp on bucks semen quality parameters of California rabbits.

Treatments T1 T2 T3 T4 SEM P value
Ejaculate volume 0.69 0.72 0.73 0.74 0.1 NS
(ml)
Hydrogen ion, pH 6.18b 7.79a 7.87a 7.89a 0.03 0.05
Individual motility 70.37b 81.88a 80.91a 81.76a 1.43 0.03
(%)
SC (×106/ml) 208.3b 307.5a 300.4a 326.3a 1.25 0.02
             
             
TSO (×106 ml) 136.48d 171.23c 189.84b 219.39a 0.89 0.005
TMS (×106 ml) 98.11d 139.92c 153.1b 177.4a 5.66 0.001
TFSF (×106 ml) 63.15c 104.17b 106.78b 138.12a 5.26 0.0001
Normal sperm 64.38c 73.95b 70.21b 77.78a 1.02 0.03
(%)
Dead sperms (%) 16.64 14.4 11.14 11.78 0.15 NS
Initial fructose 249.5 224.15 212.45 276.14 0.2 NS
mg/ 100 ml

Values (mean±S.E.) in the same row having the same superscripts are significantly different (P<0.05).SC=Sperm concentration;TSO=Total sperm output;TMS=Total motile sperm;TFSF= Total fraction sperm function.

In comparison with the control group, administrating orally of orange or lemon oil and their mixture significantly (P=0.005 and 0.001) increased the total sperm output and total motile sperm, also the total functional sperm fraction was significantly (P=0.0001) increased due to different doses of TWE. The groups of bucks that received 6.0 mL of tangerine waste extract per kilogram of body weight (T4) showed the highest values for total sperm output, total motile sperm, and total functional sperm fraction compared to the control group and other experimental groups. Khaki et al. (2010) found that giving rats 400 and 600 mg of citrus extract (a natural source of flavonoids) daily for thirty days significantly improved sperm motility compared to the control group. Administering tangerine waste extract to male deer resulted in a numerical decrease in dead sperm percentage compared to the control group. Initial fructose levels were not significantly affected by the different treatments, but there was a numerical increase in initial fructose in the T4 group compared to the control group.

A statistically significant increase (P=0.03) in normal sperm percentage was noted in all treatment groups compared to the control group. Similar findings were seen in male rabbits supplemented with thyme essential oil, which led to improvements in sperm livability, motility, and ejaculate volume compared to the control group by the end of the treatment period (Abdel-Wareth and Metwally 2020). The higher sperm motility observed in the experimental groups compared to the control group may be attributed to the protective impact of tangerine waste extract administration. EL Hefnawy et al (2020) proposed that daily supplementation of D-limonene to older rats could help safeguard their sexual organs from the effects of aging-induced oxidative stress, which can lead to a decline in physiological functions.

Conclusion

The semen evaluation parameters were enhanced when tangerine waste extract was orally administered to male rabbits under heat stress conditions. The group of bucks that received 6.0 ml/kg of body weight of tangerine waste extract showed the highest semen evaluation values compared to the control group and other experimental groups.

Reference

1.  Abdel-Wareth AAA, Metwally AE. (2020). Productive and physiological response of male rabbits to dietary supplementation with thyme essential oil. Animals. 10: 1844.

2. Ahmad A, Rasheed N, Gupta P, Singh S, Siripurapu KB, et al. (2012). Novel Ocimumoside A and B as anti-stress agents: Modulation of brain monoamines and antioxidant systems in chronic unpredictable stress model in rats. Phytomedicine, 19: 639-647.

3. Alvariño JMR. (2000). Reproductive performance of male rabbit. In: Proc. 7th World Rabbit Congress, Valencia, Spain. Vol A: 13-35.

4. Boiti C, Castellini C, Besenfelder U, Theau-Clément M, Liguori L, et al. (2005). Guidelines for the handling of rabbit bucks and semen. World Rabbit Sci. 13: 71-91. 

5. Chen Z, Zhang JR, Zhou YW, Liang C, Jiang YY. (2015). Effect of heat stress on the pituitary and testicular development of Wenchang chicks. Arch Anim Breed. 58: 373-378.

6. Dalton JC. (2011). Semen quality factors associated with fertility. Proceedings of the Applied Reproductive Strategies in Beef Cattle, Northwest, Boise, ID. Institute of Agriculture and Natural Resources. 265-281.

7. Earlier EO, Ori-Jesu M. (2008). The use of antioxidants in vegetable oils-A review. Afr J Biotechnol. 7: 4836-4842.

8. El Hefnawy MA, Samir SM, Adel M, Boraie MZ. (2020). Effect of D-Limonene on the Age-Related Androgenic Changes in Male RatsMed. J Cairo Univ. 88: 599-609.

9. Hashem NM, El-Hady AA, Hassan O. (2013). Effect of vitamin E or propolis supplementation on semen quality, oxidative status and hemato-biochemical changes of rabbit bucks during hot season. Livestock Sci. 157: 520-526.

10. Khaki A, Fathiazad F, Nouri M, Khaki A, Maleki NA, et al. (2010). Beneficial effects of quercetin on sperm parameters in streptozotocin-induced diabetic male rats. Phytother Res. 24: 1285 1291.

11. Marai IFM, Habeeb AAM, Gad AE. (2008). Performance of New Zealand white and californian male weaned rabbits in the subtropical environment of Egypt. Anim Sci J. 79: 472-480.

12. Maria CC, Rubria ER, Jose EB, Gloria MM, Jose LN, et al. (2012). ‘Characterization of volatile compounds in the Essential oil of sweet lime’ Chilean journal of Agricultural research 72: 275.

13. Moule G. (1965). Field Investigations with Sheep: A Manual of Techniques. Vict. C.S.I.R.O. East Melbourne.

14. Rasooli A, Jalali MT, Nouria M, Mohammadian B, Barati F. (2010). Effects of chronic heat stress on testicular structures, serum testosterone and cortisol concentrations in developing lambs. Anim. Reprod. Sci. 117: 55-59.

15. Pei Y, Wu Y, Cao J, Qin Y. (2012). Effects of chronic heat stress on the reproductive capacity of male Rex rabbits. Livestock Science. 146: 13-21.

16. Salisbury GW, van Demark NL. (1961). Physiology of Reproduction and Artificial Insemination of Cattle. W.H. Freeman and Company, San Francisco and London.

Other Articles

Article Image 1

Distinct MicroRNA Signatures for Mastitis Measured in Milk Following Natural Exposure in Dairy Herds

Mastitis, a global endemic disease in dairy cattle, not only adversely impact milk production/quality leading to increased economic loss to farmers, it poses a consumer health issue as the milk may be unfit for human consumption due to pathogen contamination. Use of Somatic Cell Count (SCC) as an indicator of mastitis may be insufficient for effective diagnosis of disease. MicroRNAs (MiRNAs) are increasingly recognised as promising alternative indicators of mastitis. In this study, we identified circulating miRNAs differentially expressed in milk of mastitic cows after ‘natural levels of exposures’ and in response to different causative agents ‘on farm’. Using a miRNA microarray based approach we found at least 26 miRNAs as generic indicators of clinical mastitis; 7 of which may also be early mastitis indicators. We further identified 27 miRNAs unique to S Uberispositive (SU) mastitis, including miR-320a/b which has been linked to modulation of trained immune activity. Three differentially expressed miRNAs were unique to mastitis positive for Coagulase Negative Staphylococcus (CNS), and a further 5 miRNAs were unique to SU and CNS mastitis group comparison. Our study design differs from the existing literature which reports the effects of either exogenous dosing with a singular agent or of dosed exposures in the context of single cell types (which individually contribute in only very minor ways to SCC) in an empirical ex vivo setting. Collectively, the differentially expressed miRNAs we have identified are high confidence biomarkers for detection of mastitis (even when asymptomatic), assessment of clinical status and identification of causative agent.

Sherry Ngo¹*, Stephanie Moloney¹, Xiaoling Li¹, Lorna McNaughton², Partridge A³, and Allan Michael Sheppard¹


Article Image 1

Study on Prevalence of Bovine Trypanosomosis in Dale Wabera District, Kellam Wollega Zone, Western Ethiopia

A cross-sectional study was conducted from November 2009 to April 2010 in Dale Wabera district, western Ethiopia. The objectives of the study were to determine the prevalence of bovine trypanosomosis and to assess the apparent densities of vectors of the trypanosomosis. A parasitological study using convectional Buffy coat technique was employed for the determination of prevalence of trypanosomosis while baited traps were used for the vector survey. A total of 479 tsetse flies were collected and the density of Glossina species was 11.98 fly/trap/ day. Three species of tsetse fly including Glossina morsistans submorsistans, G. pallidipes and G. tachnoides were recorded from the area. The result of parasitological study revealed that the overall prevalence of trypanosomosis was found to be 12.28%, 95% CI.The prevalence for trypanosome species was 1.53%, 3.32% and 7.42% for Trypanosoma brucei, T. vivax and T. congolense, respectively. Highest trypanosome prevalence (16.42%) was seen in animals with poor condition than that of those with medium (10.27%) and good (9.91%) body condition for the concerned parasite, but no significant difference was observed among the body conditions of cattle considered and infection with trypanosomes (P>0.05). Higher infection rate without significant difference was occurred in male (13.02%) than female (10.77%) cattle. Infection rate was higher in adult (13.25%) than young cattle (8.11%), although the difference is not significant. The mean PCV values of parasitologically negative (26.80%) animals were higher than that of positive ones (20.00%). With 12.28% the highest prevalence in the present study revealed that trypanosomosis is causes significant loss of economy due to reduced production, cost of treatment and death of the animals is supposed to be significant. Therefore, trypanosomosis and its vector control and prevention strategies should be implemented in the area.

Taye Itefa Gemtessa¹ and Kumela Lelisa Dera²*


Article Image 1

Taking Gender Difference Seriously in Mouse Models of Depression

Depression as one of the most prevalent and life-threatening forms of mental illness affects more than 1/5 of the world’s population.

Chanyi Lu¹,²,⁵#, Yao-Yao Li¹,²#, Hua-Zhen Lin³,⁴#, and Yun-Feng Zhang¹,²,⁶*


Article Image 1

BAIF Experience in Field Data Collection

The increasing availability and capabilities of mobile phones make them a feasible means of data collection. Personal Digital Assistance (PDA) systems have been used widely for public health monitoring and surveillance activities, collecting survey data, clinical studies but documentation of their use in complicated research studies requiring multiple systems is limited. This paper shares our experiences of designing and implementing a complex multi-component system for a technical livestock community to help other researchers planning to use PDA for collecting technical data related to livestock studies. We designed and implemented different versions of mobile phone data collection systems to collect information related to bovine insemination through Cattle Development Centers (CDC) operated by BAIF.

There was improvement in collecting field data by updating data logger’s versions year by year. Following two to three days of training and piloting, data were collected from 170 field technicians over 5 years period from June 2010 to December 2015. Data logger was the one of easy solution for getting the technical, social and economic information of rural small farmer. Up to year 2015 project had collected the information enrolling of about 0.25 million families, out of that 95,000 families information about poverty index was collected and 0.67 million bovine insemination data, 0.46 insemination follow up records and information about 0.13 million female progeny born through the Project had collected. The PDAs were well accepted by technicians. The use of PDAs eliminated the usual time-consuming and error-prone process of data entry and validation. PDAs are a promising tool for field research in India.

Vinod V Potdar*, Bhave K, Gaundare YS, Khadse JR, and Pande AB


Article Image 1

Performances of Cold-Set Binders, Food Hydrocolloids, and Commercial Meat Binder on the Physical and Chemical Characteristics of Tilapia Fish Balls

The overall objective of this study is to determine the effect of hydrocolloid additives in reformed fish products and to compare the performances by testing chemical and physical properties of the restructured samples. There are nine treatments in this study including control samples. The eight types of meat binders include cornstarch, commercial meat-binder, carrageen an, methylcellulose, Activa® RM, plasma powder FG+, plasma powder FG and sodium alginate. The results showed that Activa® RM and FG+ and FG could provide satisfactory binding properties in fish balls. There was no significant difference among all cooked samples moisture (p<0.05). Raw treatments had slightly higher moisture than cooked treatments. Samples treated with Activa® RM had the highest WHC for cooked samples, while methylcellulose had the lowest WHC and cooking yield. All other binder treatments samples had higher cooking yield than that of the control. Samples treated with sodium alginate had the lowest pH values for both cooked and raw samples. There were no significant differences detected for water activity for both raw and cooked samples. Samples treated with Activa® RM, FG+ and FG treated samples had the best puncture, texture, hardness, springiness. In summary, Activa® RM, FG+ and FG treatments performed well for all parameters, and sodium alginate, methylcellulose, and meat binder treatment did not show advantages when compared with the control.

Huisuo Huang and Andrew D Clarke*


Article Image 1

Syncytiovascular Membranes in the Octodon Degus Placental Barrier: Morphological Evidence

Previous data indicates that placentation in the caviomorph rodent O. degus is similar to that in humans, regarding the migration of the Extra Sub Placental-Trophoblast (EST) to the uterine arteries to be remodeling. The aim of this paper was to determine the ultra structural morphological organization of the degu´s placental barrier, as part of a wider effort to understand their reproductive biology.

Four pregnant female Degus at 86 days of gestation, and their placentas were processed for histological analysis at electron microscopy levels. Our results demonstrate that at the pregnancy term, the placental barrier shows zone with presence of syncytial knots (defined as clusters of syncytiotrophoblast nuclei) in the fine syncytium or syncytiotrophoblast, zone with apoptotic knots evidenced by the accumulation of fragmented nuclei or apoptotic bodies with condensed chromatin, and the presence of zones with Syncytiovascular membranes (alpha zone). These Syncytiovascular membranes facilitate the exchange of metabolites between mother and fetus, and are exclusively observed in thin placental barrier zones where the syncytiotrophoblast nuclei are excluded. The presence of these Syncytiovascular membranes allowed us to conclude that they were formed as a consequence of the deportation of apoptotic bodies to the maternal blood, such as occurs in chinchilla, other caviomorph rodent. On the other hand, in human placental barrier several investigators have found that the syncytial apoptotic cascade is complete when apoptotic nuclei are deported to the maternal blood circulation and subsequently removed in the mother´s lung. Therefore, we concluded that the degu and human placentas share a number of structural and functional characteristics and this fact allows us to consider the degu as a potential animal model for studies related to human placental pathologies.

Bosco Cleofina* and Díaz Eugenia


Article Image 1

The Impact of Extension Programs to Increase the Productivity of the Small-Holder Dairyfarming Industry of Pakistan

Dairy farming operations with small animal numbers producing low volumes of around three litres per animal per day predominate in Pakistan’s dairy industry. Although much of this is consumed domestically, many farmers sell small volumes into traditional milk marketing chains which feed the product into urban retail outlets. Analysis of these marketing chains show that these farmers make a loss on every litre sold, while at the other end milk available to the consumer is of poor quality and often diluted as much as 1:2 with water. Small incremental profit margins are achieved by dilution and the use of distorted volume measures as the product is passed from small dealers to larger distributors and then to retail outlets. It is important that farmers are able to improve the efficiency of production by boosting the productivity of animals. This can be achieved through the adoption of better nutrition and animal husbandry practices. At the same time small scale local marketing chains require refinement to ensure profits generated from milk production stay with local communities. This paper reports on the development of effective extension strategies involving the whole family including the farmer, his wife and children. They have led to significant improvements in the profitability of small-holder dairy farming and a growing awareness of farmers of the commercial potential for their household cows and buffalo. The sustainability of these small-holder production systems in the face of changing consumer demands for higher quality products and world dairy product trade remains to be seen.

Wynn PC¹,²*, McGill DM², Aslam N¹, Tufail S¹, Latif S¹, Ishaq M³, Batool Z³, Bush RD⁴, Warriach HM²,³, and Godfrey SS¹


Article Image 1

Effect of Hops (Humulus lupulus) Supplementation on Growth Performance of Broiler Chickens

The hop plant contains flavonoids, bitter acids and essential oils that confer antibacterial properties. An experiment was conducted to evaluate the possibility of supplementing broiler chicken diets with hop pellets. Accordingly, growth performance response of broiler chickens given hops-supplemented diets was evaluated in a 49-day floor-pen trial. Day-old (320) male broiler chicks were commercially obtained and randomly assigned to 4 treatments. Treatment 1 (CX) consisted of chicks fed unmedicated corn-Soybean Meal (SBM) diet without hops pellets added. Treatment 2 (MX) consisted of chicks fed corn-SBM basal into which Bacitracin Methylene Disalicylate (BMD) was added at 0.055g/kg. Treatment 3 (HL) consisted of chicks fed corn-SBM basal into which hops pellets were added at 1.0 % level. Treatment 4 (HH) consisted of chicks fed corn-SBM basal into which hops pellets were added at 2.0 % level. On d 21, 42, and 49, body weight, body weight gain, and Feed Conversion Ratio (FCR) were evaluated. Transient benefits of hops supplementation in form of higher feed intake and body weight gain (P < 0.05) compared to other treatments were observed but were not sustained. The FCR of birds in the hops-supplemented treatments (HL and HH) were similar (P > 0.05) to those of birds in the BMD antibioticsupplemented treatment (MX) throughout the study. It was concluded that supplementation of hops pellets into broiler diets at 1% or 2% level of the diet had no detrimental effect on broiler growth performance. Therefore, future studies should be conducted to evaluate the efficacy of dietary hops in mitigating the colonization of poultry intestine by economically important zoonotic and/or disease pathogens.

Fasina YO* and Akinola OO


Article Image 1

Survey on Farmers Husbandry Practice for Dairy Cows in Alefa and Quara Districts of North Gondar Zone, Amhara National Regional State, Ethiopia

The aim of the study was to describe the dairy cow’s husbandry practice of farmers in Alefa and Quara districts of North Gondar Zone Amhara National Regional State Ethiopia. Three Kebeles from each district, a total of six Kebeles were selected through purposive sampling procedure. Finally, 376 households (208 households from Quara and 168 households from Alefa) who had at least one lactating cow were selected through systematic random sampling procedure. Data were collected by using structured questionnaire and the collected data were analyzed by using statistical package for social science (SPSS Version 20). The main source of feed for Alefa district was, crop residue and private grazing land (36.7%), crop residue, communal and private grazing land (41.4%), while for Quara district, communal grazing land (49.8%) and private, communal and crop residue (39.6%)were the main feed sources. In respective order, about 70.8 and 81.3% of respondents for Alefa and Quara districts were confirmed that river water was the main source for dairy cows. Housing system in Alefa district was simple shied adjacent to farmer’s house (97.6%), but in Quara district, it was barn system (95.2%). Trypanosomiasis (58.7%), Lumpy skin disease (18.8%) and Babesiosis (8.7%) was the most challenging livestock disease in Quara district, while in Alefa district Blackleg (30.5%), Lumpy skin disease (21%) and Trypanosomiasis (20.4%) was challenging disease. The major livestock production constraint in Quara district was feed and disease with the same indices value of 0.32 and Water 0.20 were observed. Similarly, feed followed by disease was the major constraint in Alefa district with index value of 0.5 and 0.2, respectively.

Bernabas Ayeneshet¹*, Zewdu Wondifraw², and Michael Abera²


Article Image 1

Production Objectives, Breeding Practices and Rate of Inbreeding in Dairy Cows at Alefa and Quara Districts of North Gondar Zone, Amhara National Regional State, Ethiopia

The aim of this study was to identify breeding practice, production objectives, selection and culling criterias of farmers for dairy cows in Alefa and Quara districts of North Gondar Zone Amhara National Regional State Ethiopia. 376 households (208 households from Quara and 168 households from Alefa) were selected by using systematic sampling procedure. Data were collected by using structured questionnaire and the collected data were analyzed by using statistical package for social science (SPSS Version 20). The main production objectives of farmers in Quara district were for milk production (0.43), draught purpose (0.32), and selling purpose (0.2). While in Alefa district it was 0.34, 0.36 and 0.27 for milk production, draught and selling purpose respectively. The main selection criteria for dam and sire in both districts were reproductive performance, body conformation and coat color. Most farmers in both districts were decided to cull the herd when they showed long AFS with index value of (0.38) and (0.3) for Quara and Alefa districts, respectively. About 208 (100%) of respondents in Quara were using natural breeding system. While bout 148 (88.1%), 11 (6.5%) and 9 (5.4%) of respondents in Alefa district were used natural, both natural and AI technology and AI only, respectively. About 44.4, 25, 23.2, and 7.7% of respondents in Alefa district were used breeding bull from a neighbor, communal grazing land, own and rent bull, respectively. While the majority (47.1%) of respondents in Quara district were used own bull. Under uncontrolled random mating effective population size and rate of inbreeding for Quara district was 9.0 and 0.05, respectively. While for Alefa district it was 3.2 and 0.15, respectively.

Bernabas Ayeneshet¹*, Zewdu Wondifraw², and Michael Abera²