scholarly journals Short communication: Genetic analysis for fertility traits of heifers and cows from smallholder dairy farms in a tropical environment

2015 ◽  
Vol 98 (7) ◽  
pp. 4990-4998 ◽  
Author(s):  
S. Buaban ◽  
M. Duangjinda ◽  
M. Suzuki ◽  
Y. Masuda ◽  
J. Sanpote ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Short Communication ◽  
Dairy Farms ◽  
Tropical Environment ◽  
Smallholder Dairy ◽  
Fertility Traits ◽  
Smallholder Dairy Farms

Genetic relationships of fertility traits with test-day milk yield and fat-to-protein ratio in tropical smallholder dairy farms

2015 ◽  
Vol 87 (5) ◽  
pp. 627-637 ◽  
Author(s):  
Sayan Buaban ◽  
Monchai Duangjinda ◽  
Mitsuyoshi Suzuki ◽  
Yutaka Masuda ◽  
Jureeratn Sanpote ◽  
...  
Keyword(s):  
Milk Yield ◽  
Genetic Relationships ◽  
Dairy Farms ◽  
Protein Ratio ◽  
Smallholder Dairy ◽  
Fertility Traits ◽  
Smallholder Dairy Farms

scholarly journals Understanding variability in greenhouse gas emission estimates of smallholder dairy farms in Indonesia

2021 ◽  
Author(s):  
Titis Apdini ◽  
Windi Al Zahra ◽  
Simon J. Oosting ◽  
Imke J. M. de Boer ◽  
Marion de Vries ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Rainy Season ◽  
Greenhouse Gas Emission ◽  
Dairy Farms ◽  
Dry Season ◽  
Enteric Fermentation ◽  
Tropical Regions ◽  
Population Mean ◽  
Smallholder Dairy ◽  
Smallholder Dairy Farms

Abstract Purpose Life cycle assessment studies on smallholder farms in tropical regions generally use data that is collected at one moment in time, which could hamper assessment of the exact situation. We assessed seasonal differences in greenhouse gas emissions (GHGEs) from Indonesian dairy farms by means of longitudinal observations and evaluated the implications of number of farm visits on the variance of the estimated GHGE per kg milk (GHGEI) for a single farm, and the population mean. Methods An LCA study was done on 32 smallholder dairy farms in the Lembang district area, West Java, Indonesia. Farm visits (FVs) were performed every 2 months throughout 1 year: FV1–FV3 (rainy season) and FV4–FV6 (dry season). GHGEs were assessed for all processes up to the farm-gate, including upstream processes (production and transportation of feed, fertiliser, fuel and electricity) and on-farm processes (keeping animals, manure management and forage cultivation). We compared means of GHGE per unit of fat-and-protein-corrected milk (FPCM) produced in the rainy and the dry season. We evaluated the implication of number of farm visits on the variance of the estimated GHGEI, and on the variance of GHGE from different processes. Results and discussion GHGEI was higher in the rainy (1.32 kg CO2-eq kg−1 FPCM) than in the dry (0.91 kg CO2-eq kg−1 FPCM) season (P < 0.05). The between farm variance was 0.025 kg CO2-eq kg−1 FPCM in both seasons. The within farm variance in the estimate for the single farm mean decreased from 0.69 (1 visit) to 0.027 (26 visits) kg CO2-eq kg−1 FPCM (rainy season), and from 0.32 to 0.012 kg CO2-eq kg−1 FPCM (dry season). The within farm variance in the estimate for the population mean was 0.02 (rainy) and 0.01 (dry) kg CO2-eq kg−1 FPCM (1 visit), and decreased with an increase in farm visits. Forage cultivation was the main source of between farm variance, enteric fermentation the main source of within farm variance. Conclusions The estimated GHGEI was significantly higher in the rainy than in the dry season. The main contribution to variability in GHGEI is due to variation between observations from visits to the same farm. This source of variability can be reduced by increasing the number of visits per farm. Estimates for variation within and between farms enable a more informed decision about the data collection procedure.

Forage availability and its quality in the dry season on smallholder dairy farms in Tanzania

2008 ◽  
Vol 58 (4) ◽  
pp. 196-204 ◽  
Author(s):  
E. J. Mtengeti ◽  
E. C. J. H. Phiri ◽  
N. A. Urio ◽  
D. G. Mhando ◽  
Z. Mvena ◽  
...  
Keyword(s):  
Dairy Farms ◽  
Dry Season ◽  
Forage Availability ◽  
Smallholder Dairy ◽  
Smallholder Dairy Farms

Diet factors and subclinical laminitis score in lactating cows of smallholder dairy farms in Thailand

2013 ◽  
Vol 155 (2-3) ◽  
pp. 197-204 ◽  
Author(s):  
R. Pilachai ◽  
J.Th. Schonewille ◽  
C. Thamrongyoswittayakul ◽  
S. Aiumlamai ◽  
C. Wachirapakorn ◽  
...  
Keyword(s):  
Dairy Farms ◽  
Lactating Cows ◽  
Smallholder Dairy ◽  
Smallholder Dairy Farms

Effect of feeding oat and vetch forages on milk production and quality in smallholder dairy farms in Central Kenya

2018 ◽  
Vol 50 (5) ◽  
pp. 1051-1057 ◽  
Author(s):  
Solomon W. Mwendia ◽  
Chris M. Mwungu ◽  
Stanley Karanja Ng’ang’a ◽  
David Njenga ◽  
An Notenbaert
Keyword(s):  
Milk Production ◽  
Dairy Farms ◽  
Smallholder Dairy ◽  
Effect Of Feeding ◽  
Central Kenya ◽  
Smallholder Dairy Farms
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