Reproductive and Growth Characteristics During The First Age of Kıvırcık, Sakız and Gökçeada Indigenous Sheep Breeds

Sezenler, Tamer; Köycü, E.; Yaman, Yalçın; Ceyhan, Ayhan; Küçükkebapçı, Mustafa; Yüksel, Mehmet

doi:10.24925/turjaf.v2i3.106-111.77

Cited by 5 publications

(5 citation statements)

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“…Average first oestrus live weights for these breeds were found to be 37.93, 33.35 and 29.75 kg, respectively. The highest first oestrus live weight was observed in Kıvırcık breed and this was followed by Sakız and Gökçeada sheep breeds (Sezenler et al, 2014b). The first oestrus age for the Kıvırcık, Sakız and Gökçeada breeds were found to be 315.13, 320.35 and 337.37 days, respectively, and the breeds that showed oestrus earlier displayed the same order as well.…”

Section: Reproductive Performance Of Ewesmentioning

confidence: 75%

“…In the other study Sezenler et al (2014b) reported that, the birth weights were 3.64, 3.91 and 3.28 kg, the weaning weights were 31.01, 25.44 and 23.67 kg, the sixth month live weights were 32.87, 26.95 and 24.15 kg, yearling weights were 39.01, 30.95 and 30.27 kg, the average daily weight gains were 271, 257 and 202 g/day in Kivircik, Sakiz and Gökçeada (Imroz) lambs conserved in their habitat under on station, respectively. The birth weight of Kivircik lambs was lower than the report of Sezenler et al (2014a).…”

Section: In-situ and Ex-situ In Vivo Conservation Of Sheep Breedsmentioning

confidence: 85%

“…The first oestrus age for the Kıvırcık, Sakız and Gökçeada breeds were found to be 315.13, 320.35 and 337.37 days, respectively, and the breeds that showed oestrus earlier displayed the same order as well. The oestrus lengths were determined as 30.99, 25.85 and 20.28 hours for the Kıvırcık, Sakız and Gökçeada breeds, respectively (Sezenler et al, 2014b).…”

Section: Reproductive Performance Of Ewesmentioning

confidence: 99%

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Sheep genetic resource conservation experience in Turkey and future prospects in Ethiopia: A Review

Tesema¹,

Shenkute²

2019

jaar

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Conservation of native animal genetic resource is vital to maintain genetic diversity sustainably and to cope with the future challenging climate change. Thus, the aim of this paper was to review the experience of sheep conservation practice in Turkey and future prospects in Ethiopia. In turkey, fifteen sheep types are extinct and other native sheep population decreased by 47% due to an unplanned crossbreeding program. For these reasons, sheep genetic resource ex-situ in vivo conservation project started in 1995 with three sheep breeds. The animal breeding law regarding registration of new breed and conservation of animal genetic resources was enacted in 2001 in Turkey. In-situ conservation subsidies of sheep breeds near to extinction have been continued since 2005. Following these events, in vitro conservation of germplasm of 13 sheep breeds have been initiated in 2007 and two gene banks have been established and thereby sperm, embryo, cell, and DNA of from each sheep breed conserved in the gene bank. Although they were successful in both in-situ and ex-situ conservations with some limitations, in-situ conserved sheep breeds had better productivity than ex-situ in vivo conserved sheep in Turkey. In the case of Ethiopia, in-situ conservation will be compatible with the existing infrastructure. Through balancing the genetic gain and inbreeding level, it is possible to integrate the existing community-based genetic improvement programs (with in breed selection) with sustainable in-situ conservation of native sheep genetic resources in Ethiopia.

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Section: Reproductive Performance Of Ewesmentioning

confidence: 75%

Section: In-situ and Ex-situ In Vivo Conservation Of Sheep Breedsmentioning

confidence: 85%

Section: Reproductive Performance Of Ewesmentioning

confidence: 99%

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Sheep genetic resource conservation experience in Turkey and future prospects in Ethiopia: A Review

Tesema¹,

Shenkute²

2019

jaar

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“…Tahirova ewe lambs can be used for first breeding at the age of 4-5 months or at the latest six months, due to their live weight at the age of 4-6 months (Table 1; Figure 1). Sezenler et al (2014) indicated that for Kıvırcık, Chios, and Gökçeada sheep breeds, the live weight and age at first estrus was 37.9, 33.3, and 29.7 kg and 315, 320, and 337 days, respectively. The fact that only mothers that gave birth to singles returned (ewe lambs born to twins had a lesser return rate and frequency of return) draws our attention to multiplicity, which may be an important criterion for the reproductive performance of Tahirova sheep.…”

Section: Milk Yield and Compositionmentioning

confidence: 99%

Effects of milking system in suckling period on growth, reproduction traits, and milk yield of East Friesian-cross dairy sheep

Tölü¹,

Yazgan²

2022

Revista Brasileira De Zootecnia

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The main objective of this study was to determine the effects of milking system on growth, reproduction, and milk yield and composition of East Friesiancross (Tahirova) dairy sheep that were milked in the evening during the suckling period. A total of 43 Tahirova ewes and 58 lambs were used in the present study. One of the groups was milked in the evening (evening milked; EM) before coming together with their lambs, and the other group was not (not milked in the evening; NEM). Morning milking was performed in both groups during the study. Lambs in both groups were individually weaned at the age of 60 days. There was no statistical difference between the lambs' live weight at weaning in the EM and NEM groups, determined to be 23.46 and 24.11 kg, respectively. Live weight values of lambs were similar in the groups at ages of up to 180 days. The reproductive characteristics of ewe lambs in the EM and NEM groups, having similar growth rates and a similar live weight and body condition in the first estrus stages, were also similar. The return rate and frequency of return were close in both groups of ewe lambs. Milk yield of the NEM group was significantly higher than that of the EM group before and after weaning. However, in groups with similar lactation milk yield and length, the total marketable milk yield was higher in the suckling period of the EM group. The milking system in suckling period of Tahirova ewes does not significantly affect growth, average daily gain, and reproductive characteristics. Milk yield in the NEM group before and after weaning was significantly higher than the EM group, but the total marketable milk yield was higher in the EM group.

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“…The BCS value is the result of assessing the condition of muscle and fat in the loin. It is helpful as an indicator to evaluate changes in the nutritional status of broodstock from time to time [16]. The BCS value of each sheep varies significantly due to various factors, including age, sex, and management of livestock rearing.…”

Section: Introductionmentioning

confidence: 99%

Correlation between Sheep Body Condition Score and Lambing Interval in Langkat District of Indonesia

Kurniawan

Sitepu

Aditya

2023

AJBGMB

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The Body Condition Score relates to livestock reproduction, such as estrus, pregnancy, the birth process, and the condition of lambs. If the lamb has a bodyweight exceeding the ideal body weight, the animal will experience reproductive disorders to metabolic diseases. However, if the mother sheep has a body weight less than ideal, it can disrupt the reproductive system, affecting the symbol interval. This research aims to find out the relationship between Body Condition Score and the reproductive performance of sheep in Langkat Regency, namely Service Per Conception and Lambing Interval. The study design is Deskriptif analysis. Research conducted in Langkat Regency, Indonesia, between November 2022 and January 2023.The method used in this research is a case study, namely by collecting primary and secondary data. The observed variables are Body Condition Score (BCS) and Lambing Interval. The results of the study are The value of the Body Condition Score with the Lambing Interval regression equation Y = 15.677-0.818X. (R2) 12.8%. (r) of 0.358. The relationship between Body Condition Score and Calving Interval is positive, with an R2 value of 12.8%. The conclusion of the research is The relationship between the lambs Body Condition Score (BCS) and the Lambing Interval had a good correlation with an average Calving Interval ranging from ≤8 to 9 months.

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Reproductive and Growth Characteristics During The First Age of Kıvırcık, Sakız and Gökçeada Indigenous Sheep Breeds

Cited by 5 publications

References 10 publications

Sheep genetic resource conservation experience in Turkey and future prospects in Ethiopia: A Review

Sheep genetic resource conservation experience in Turkey and future prospects in Ethiopia: A Review

Effects of milking system in suckling period on growth, reproduction traits, and milk yield of East Friesian-cross dairy sheep

Correlation between Sheep Body Condition Score and Lambing Interval in Langkat District of Indonesia

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