The effect of non-genetic factors on the reproductive performance of Sanga and Friesian × Sanga crossbred dairy cattle breeds kept under hot and humid environment

Apori, Samuel Obeng; Hagan, Julius Kofi

doi:10.1007/s11250-014-0604-7

Cited by 7 publications

(5 citation statements)

References 4 publications

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“…The BW of AF and AB crosses were not significantly different from each other; however, they were significantly higher than those of AS, AJ, AJxS, and ASxJ crosses (Table 3 ). The mean BW of AF observed in this study was higher than that reported with Sanga × Friesian cattle in Ghana (23.9 kg) (Apori and Hagan 2014 ). For the same genotype (AF) investigated in Democratic Republic of Congo, Kibwana et al ( 2015 ) reported birth weight of 23.8 kg in non-supplemented group of animals and 24.8 kg in supplemented group.…”

Section: Discussioncontrasting

confidence: 82%

Growth traits of crossbreds of Ankole with Brown Swiss, Holstein Friesian, Jersey, and Sahiwal cattle in Rwanda

Manzi

Rydhmer

Ntawubizi

et al. 2017

Trop Anim Health Prod

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The objective of the study was to compare body weights and growth from birth to 18 months of age of various groups of crossbred cattle born from 1999 to 2007, being crossbreds of Ankole (A) with Brown Swiss (B), Holstein Friesian (F), Jersey (J), and Sahiwal (S). Average weights were 26.5 kg at birth, 161 kg at weaning, and 226 kg at 18 months. Both season and sex significantly affected birth weight (BW), weight at 8 and 18 months (W8 and W18), and average daily gain from weaning to 18 months (ADG18) and, unlike season, sex significantly affected average daily gain to 8 months and weaning age. The general trend was that average daily gain attained a maximum before weaning and thereafter decreased until 18 months. Least square means for AB and AF calves were comparable and significantly differed only for W18 and ADG18. AJ had the lowest BW but was comparable with AS, AJxS, and ASxJ for W8, age-adjusted weaning weight, and W18. Generally, AF was heavier than other breed groups, but the difference was smaller than expected probably because environmental conditions did not allow full expression of genetic potential for growth.

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Section: Discussioncontrasting

confidence: 82%

Growth traits of crossbreds of Ankole with Brown Swiss, Holstein Friesian, Jersey, and Sahiwal cattle in Rwanda

Manzi

Rydhmer

Ntawubizi

et al. 2017

Trop Anim Health Prod

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“…In agreement with previous reports (Apori and Hagan 2014;Fekadu et al 2011;Tadesse et al 2010), a significant improvement in reproductive performance according to the year of calving was observed in this study. There was a positive effect resulting from regular reproductive monitoring at the 35 farms involved in our study.…”

Section: Discussionsupporting

confidence: 94%

“…to our study, AFC (791 days) was much lower than that observed in Brazil (847 days) (Knob et al 2016), Ghana (1146 days) (Apori and Hagan 2014), and Thailand (987 days) (Buaban et al 2015) for Holstein crossbred heifers. This difference might result from the effect of recommendations for Vietnamese dairy farmers to breed their Holstein crossbred and pure breed heifers from 15 months of age, when they have reached a weight of 280 and 320 kg, respectively (Dairy Vietnam 2012).…”

Section: Discussioncontrasting

confidence: 77%

“…Poor reproductive performance is a major factor responsible for a reduction in the profitability of dairy farms (Grohn and Rajala-Schultz 2000). Many studies were carried out in tropical or subtropical conditions with a similar climate to Vietnam, such as Ghana (Apori and Hagan 2014), Thailand (Buaban et al 2015), Iran (Ansari-Lari et al 2009;Atashi et al 2012), Brazil (Knob et al 2016), Ethiopia (Fekadu et al 2011;Tadesse et al 2010), and China (Wu et al 2012). They have reported an average birth-first calving interval (AFC) between 801 and 1265 days and a calving interval (CI) between 381 and 561 days.…”

Section: Introductionmentioning

confidence: 99%

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Study on reproductive performance of Holstein x Lai Sind crossbred dairy heifers and cows at smallholdings in Ho Chi Minh City, Vietnam

Nguyen-Kien

Khánh

Hanzen

2017

Trop Anim Health Prod

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The reproductive performance of Holstein x Lai Sind crossbred dairy heifers and cows was evaluated at smallholdings in Ho Chi Minh City (HCMC). The data of 232 heifers and 244 cows (261 lactations) from 35 small dairy farms was collected over a 2-year period, from 2013 to 2014. The overall mean for age at first service (AFS), days between first and last service (DFLS), and age at conception (AC) of heifers was 479 (±80), 38 (±80), and 517 (±114) days, respectively. Average number of services per conception (NSC), conception rate (CR), and conception rate at first service (CRFS) was 1.8 (±1.4), 55, and 58%, respectively. The overall mean for the waiting period (WP), DFLS, and days open (DO) of cows was 109 (±52), 133 (±114), and 242 (±129) days, respectively. The mean for NSC, CR, and CRFS was 4.3 (±2.7), 23, and 14%, respectively. A very significant decrease in AFS and AC according to the year of birth, and a significant increase in AFS according to body weight at first insemination (>320 kg) were observed. The CRFS of heifers inseminated in 2013 was significantly higher than in 2014. Monthly mean CR in heifers and cows was negatively correlated with THI. The WP, DFLS, DO, and NSC of cows significantly decreased according to the year of calving. Cows that calved in rainy season had a significantly longer WP than in dry season. The occurrence of postpartum (PP) diseases was accompanied by an increase in WP, DO, and NSC. A decrease in body condition score (BCS) between calving and 60th day (C60) and also between 60th and 120th day of lactation resulted in a significant increase in WP and DO. A decrease in BCS between C60 was also accompanied by a considerable reduction in CRFS of cows. Season and BCS at insemination had a significant effect on NSC and CR of cows. Reproductive performance was satisfactory for heifers, but poor for cows. Losses of BCS during the first months of lactation and at insemination were the major risk factors for this poor performance. Moreover, the season had a more negative effect on fertility in cows than in heifers.

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“…A similar study on the conception rate of beef cattle indicated 71.7 ± 9.5% (Samkange et al, 2019), and the overall conception rate of the Nguni cows (78.3%) was significantly higher than that of the Afrikaner (70.9%) and Simmental cows (64.9%) (p < 0.05). Apori and Hagan (2014) reported calving and conception rates of 74.3 and 76.1%, respectively, in various herds of Sanga cattle in Southern Africa under similar conditions. One of the key production and performance indicators of a cow herd is the number of weaners produced.…”

Section: Discussionmentioning

confidence: 85%

Evaluation of Nguni cattle performance from communal property associations and private ownership types across three ecological zones of Mpumalanga province, South Africa

Sambo

Tada

Chitura

et al. 2023

5005

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Nguni cattle in South Africa are diminishing at the expense of exotic breeds and crossbreeds. Therefore, the Industrial Development Corporation and Mpumalanga Province Department of Agriculture adopted the Nguni cattle conservation project. Herds of 30 heifers and a bull were allocated to 34 communal property associations (CPAs) and 40 private farms. This study aimed to evaluate growth and reproductive performance across three ecological zones and two ownership patterns. Nine CPAs and nine private farms were sampled. Age at first calving, conception, calving, and weaning rates were determined from production records, while calf birth and weaning weights were digitally measured. Data was analyzed using two-way analysis of variance (ANOVA) with Tukey’s honestly significant difference (HSD) used for mean separation. Significant differences were observed across ecological zones for age at first calving, weaning rate, and birth and weaning weights (p < 0.05). Concerning age at first calving, the Midveld ecological zone performed best (24 months) for both ownership types compared to the Highveld (28.09 months private, 26.00 CPA) and Lowveld (28.35 months for both ownership types). Highveld performed higher on birth weight (25.35 kg) and weaning rate for private (93%) and CPA (80%). Lower birth weights were observed in both ownership types in Midveld (22.17 kg). The Lowveld zone had a higher birth weight (26.80 kg) in CPA. Higher weaning weights were observed in private ownership of Highveld (190.16 kg) and the lowest (160.39 kg) in the Midveld zone. CPAs in Highveld had higher weaning weights (187.55kg) than in Midveld (167.50 kg). The results suggest that Nguni cattle respond differently in the various ecological zones of Mpumalanga Province.

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The effect of non-genetic factors on the reproductive performance of Sanga and Friesian × Sanga crossbred dairy cattle breeds kept under hot and humid environment

Cited by 7 publications

References 4 publications

Growth traits of crossbreds of Ankole with Brown Swiss, Holstein Friesian, Jersey, and Sahiwal cattle in Rwanda

Growth traits of crossbreds of Ankole with Brown Swiss, Holstein Friesian, Jersey, and Sahiwal cattle in Rwanda

Study on reproductive performance of Holstein x Lai Sind crossbred dairy heifers and cows at smallholdings in Ho Chi Minh City, Vietnam

Evaluation of Nguni cattle performance from communal property associations and private ownership types across three ecological zones of Mpumalanga province, South Africa

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