Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
New imply ages to start with calving for everyone breeds built is ± weeks, symbolizing as much as 3 years (a couple of years 11 days 19 months ± eleven weeks 24 hours). Minimal is actually weeks and the limitation try weeks. Many precocious heifers calved contained in this two years ( months). For 50% of heifers, earliest calving is at weeks. The initial attributes occurred typically at the ± weeks ( so you can weeks).
The new suggest AFC of crossbreeds are less than the individuals advertised one of several Zebu underneath the tropics within over 40 days advertised in several training ( Rahman et al., 2016 ; Tellah ainsi que al., 2015a , 2015b ; Bashir and you can El Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi ainsi que al., 2005 ). , 2015 ). Particular article authors keeps stated performance most near to all of our observation towards additional crossbreeds from inside the Africa, in spite of cow types found in the fresh new try out: 34 weeks one of several Montbeliard crossbreeds into the Algeria ( Madani and you may Mouffok, 2008 ) and you may Morocco ( Srairi and you can Mousili, 2014 ), ± 0.43 weeks from the Girolando crossbreed inside Benin ( Doko et al., 2012 ). It had been an identical on the Holstein-Friesian hybrid cows inside Ethiopia on thirty six.4 ± 1.7 days, this new Borgou and you may Lagunaire types within thirty six.1 ± six.29 days in Benin ( Adamou-Ndiaye ainsi que al., 2003 ) plus in the fresh new Azawak Zebu in the 36.5 ± 4.10 and you may ± 13 weeks for the Niger ( Achard and you may Chanono, 2006 , 1997 ).
Our observance is actually greater than the individuals advertised of the Genzebu mais aussi al. (2016) among hybrid cattle in Kenya (twenty six.9 ± 5.4 and you will twenty-seven.0 ± step three.seven days). It had been some much better than the fresh findings by the Ngodigha mais aussi al. (2009) from 29.seven ± 2.5 weeks certainly one of crossbreeds (Holstein x Bunadji) in the Nigeria, Ben Salem mais aussi al. (2009) out-of 29.seven ± cuatro.1 year for the Holstein inside the Tunisia and Srairi and you may Mousili (2014) out of 31 weeks from inside the Montbeliard into the Morocco.
Among the more crossbreeding items understood ( Dining table step 1 ), the fresh new Fulani Zebu (FZ) inseminated that have semen from Montbeliard (MB x FZ) and you will Alps Brownish (Abdominal x FZ) provides lead many precocious corssbreeds (very first calving in the two years) (5%). Whenever you are, brand new inseminations out-of Fulani Zebu cattle for the sperm from Holstein (HT x FZ) and you can regarding Tarentaise (T x FZ) then the insemination from Gudali Zebu cattle having semen of Montbeliard (MB x GZ) has brought brand new precocious hybrid cattle.
Some type circumstances regarding the AFC was indeed assessed in order to reach the statements
Table step 1: Ages in the beginning calving (months) based on crossbreeding enter in whole milk cows farms in your community off Bobo-Dioulasso for the Burkina Faso
So you can ideal understand the effectation of the newest crossbreeding towards intimate precocity from hybrid animals, the latest AFC was reviewed according to: crossbreed type of, competition off sire parents (bull and you may inseminated regional cows), hybridization top and you can stock farms
The dating sites for Android professionals analysis concerned about the reproduction track of twenty (20) hybrid cattle as a result of this new interbreeding through the artificial insemination ranging from local breed cows (Gudali Zebu and you may Fulani Zebu) and you can amazing reproduce bulls (Holstein, Alps Brown, Tarentaise, Montbeliard). This type of crossbreeds was basically born between 1999 and you can 2010 and you may offered its first calf anywhere between 2002 and you can 2012 to the around three enhanced inventory farms inside urban and you may suburban areas of Bobo-Dioulasso. Each one of these facilities enjoys from the 50 crossbreed cows inside development. The original farm is found in an urban area, another ten Kilometer away within southern get-off additionally the third sixty Km aside from the eastern leave from Bobo-Dioulasso. First studies anywhere between during these components helped to select these types of about three farms with a cattle register (temperatures and you can fake insemination overseeing sheets). Incidents regarding individual monitoring of animal breeding like calving times, times of one’s first heating and you can inseminations had been submitted daily because of the the newest cattlemen additionally the inseminators. The newest exploitation of them data managed to get you can easily to choose twenty (20) very first calving’s corresponding to the initial features. These farms is characterized by the current presence of destroyed, an excellent herd wellness monitoring, a guided reproduction form (mainly AI, to own diminished a selected bull), new focus provides (cotton cake or cottonseed and commercial malt) from the ration eating and intense shipments from silage and you can agricultural of the points. The only real aim of that it operation type ‘s the creation and you may sales out of yourself canned milk products, two times a day (early morning and you will night). The new focuses try offered to the animals on the get back away from grazing and also in the newest early morning at the milking big date.