scholarly journals Heritability and Correlations Among Body Condition Score Loss, Body Condition Score, Production and Reproductive Performance

2002 ◽  
Vol 85 (11) ◽  
pp. 3062-3070 ◽  
Author(s):  
C.D. Dechow ◽  
G.W. Rogers ◽  
J.S. Clay
Keyword(s):  
Body Condition ◽  
Reproductive Performance ◽  
Body Condition Score ◽  
Condition Score

The effect of level of nutrition prior to mating on the reproductive performance of ewes of two welsh breeds in different levels of body condition

1991 ◽  
Vol 52 (1) ◽  
pp. 157-163 ◽  
Author(s):  
R. G. Gunn ◽  
T. J. Maxwell ◽  
D. A. Sim ◽  
J. R. Jones ◽  
M. E. James
Keyword(s):  
Body Condition ◽  
Reproductive Performance ◽  
Body Condition Score ◽  
High Surface ◽  
Live Weight ◽  
Corpora Lutea ◽  
Stocking Rate ◽  
Treatment Groups ◽  
Condition Score ◽  
Body Condition Scores

ABSTRACTThe effects of high-low (HL) and low-high (LH) patterns of nutrition during the 5 weeks prior to a synchronized mating were studied on the reproductive performance of 115 Welsh Mountain and 114 Brecknock Cheviot ewes in a range of body condition at the start of treatment. For 2 months prior to treatment imposition, ewes were grazed in a systematic way at different stocking rates on different sward heights to obtain a range of body condition scores. Target score groupings were 2·00 to 2·25, 2·50 to 2·75 and 3·00 to 3·25 and although scores of 1·50 to 3·25 were obtained, most lay in the 2·00 to 2·75 range. Two treatment groups, balanced for live weight and body condition score, received high and low levels of nutrition for 16 days from mid October, achieved, respectively, by a low stocking rate on a sward with a high surface height plus ad libitum concentrate and a high stocking rate on a sward with a low surface height plus 200 g hay per head per day. Treatments were then reversed for the 17 days prior to mating. Live-weight and body condition-score changes were recorded and reproductive performance at first mating was measured from counts of corpora lutea and viable embryos at slaughter either at return to service or at 4 weeks after first mating. There were no differences due to nutritional pattern in live weight or body condition score at mating. The LH treatment significantly increased the rates of ovulation, conception, multiple ova survival and potential lambing per ewe pregnant and per ewe mated in the Welsh Mountain breed but significantly increased only the rates of ovulation and potential lambing per ewe pregnant in the Brecknock Cheviot breed compared with the HL treatment. The relatively poorer response in the latter breed was partially due to a lower ovulation rate potential coupled with non-significantly lower rates of conception and survival of single-shed ova associated with the LH treatment. Much of this relatively poorer reproductive performance in the Brecknock Cheviot breed was in ewes with body condition scores 3= 2·75. Reproductive performance increased with increasing body condition at the start of treatment over the range of scores =≤ 2·25 to 2·50 in both breeds and, while continuing to improve in scores above 2·50 in the Welsh Mountain breed, in the Brecknock Cheviot breed it started to decline. Ewes with a body condition score of 2·50 in both breeds showed the greatest response in potential lambing rate to the LH treatment.

Genetic aspects of body weight, body condition score, scrotal circumference and reproductive performance in Italian Holstein young bulls

2003 ◽  
Vol 2003 ◽  
pp. 53-53 ◽  
Author(s):  
S. Biffani ◽  
A.B. Samoré ◽  
F. Canavesi ◽  
E. Olzi ◽  
M. Cassandro
Keyword(s):  
Body Weight ◽  
Body Condition ◽  
Reproductive Performance ◽  
Body Condition Score ◽  
Point Of View ◽  
Progeny Testing ◽  
Scrotal Circumference ◽  
Good Physical Condition ◽  
Condition Score ◽  
Recessive Genes

Apart from all the issues regarding health and undesirable recessive genes, which are determining factors to identify bulls not suitable for AI, there are other aspects which can be considered. The principal aims of AI studs are the selection of the best animals from a genetic point of view and the production of semen in a very short time, in order to start progeny testing as soon as possible. In Italy progeny testing starts when 1200 straws for each young bull are available. This requirement implies that bulls should be in good physical condition. According to this, the genetic centre of the Italian Holstein Breeder Association (ANAFI) has been paying growing attention to animal welfare and fitness, recording routinely some biometrical indicators. Body weight (BW), scrotal circumference (SC), body condition score (BCS) are some examples of this policy and could be helpful and easy predictors of reproductive performance for a young progeny testing dairy bull. The objective of this report was to conduct a preliminary analysis on the genetic aspects of BW, BCS, SC, age at the 1st usable straw (AGE1) and age at the 1200th straw (AGE1200) in Italian Holstein young bulls.

scholarly journals Effects of parity and body condition score (BCS) on oestrus expressions and post breeding reproductive performance of Katjang crossbred goat

2021 ◽  
Vol 6 (2) ◽  
pp. 80-87
Author(s):  
Intan Sofienaz Ahmad Fuad ◽  
Khairiyah Mat ◽  
Nor Dini Rusli ◽  
Hasnita Che Harun
Keyword(s):  
Litter Size ◽  
Body Condition ◽  
Reproductive Performance ◽  
Body Condition Score ◽  
Fertilization Rate ◽  
Visual Observation ◽  
Gestation Length ◽  
Progesterone Concentration ◽  
Condition Score ◽  
Embryonic Loss

This experiment goal was to identify the effect of parity and body condition score (BCS) on oestrusexpressions (OE), post breeding reproductive performance (PBRP) of Katjang crossbred andchanges of progesterone (P4) concentration. Twenty-four does were treated with 14 dayssynchronisation followed by visual observation of oestrus expressions (standing heat (SH),mounted by other buck but not standing (MBNS), vocalization (VC), tail swaging (TW), andsniffing of the genital of other buck (SGB)) and blood sampling twice daily up to 72 hours followingControl Internal Drug Release (CIDR) removal. PBRP data was recorded for evaluation whichincluded pregnancy rate (PR), abortion rate (AR), mortality rate (MR), litter size (LS), litter birthweight (LBW) and gestation length (GL). Result revealed that there was no significant effect(P>0.05) of parity and BCS on OE, PBRP and progesterone concentration except for birth weightwhich had been affected by parity. Based on observation of OE of SH, it was found that accuracyof pregnancy prediction was up to 50%. Analysis of OE established reliability of OE in wassequence from SH>SGB>TW>MBNS>VC and onset of oestrus began approximately 33h post toCIDR removal. Analysis of PBRP shown parity?2 had heavier birth weight in single litter size thanparity?3 which was associated with no MR. Progesterone concentration indicated all of the doeswere on oestrus and highly susceptible as early as 48 h post to CIDR removal. In conclusion, thisstudy demonstrated that both non-genetic factors; parity and BCS are very poor in determining theeffect of OE, PBRP and P4 concentration due to limitation of sample size and greater influences ofexternal factors such as weather, extreme environmental condition and farm management. It isrecommended to improve program in future by focusing on enhancing the fertilization rate andreducing embryonic loss for optimum conception rate.

scholarly journals BODY CONDITION SCORE AND REPRODUCTIVE PERFORMANCE OF DAIRY COWS IN EASTERN REGION OF PARAGUAY

2018 ◽  
Vol 8 (1) ◽  
pp. 16-21
Author(s):  
C Kawashima ◽  
K Watanabe ◽  
R Meza Fernandez ◽  
M Matsui ◽  
M Kawai ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Body Condition ◽  
Reproductive Performance ◽  
Body Condition Score ◽  
Eastern Region ◽  
Condition Score
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